Do you have a personal experience with WhatsApp on an older iOS device, or are you simply curious about the history of WhatsApp on iOS? I'd love to hear more!
Check the file with a tool like on Windows or otool on Mac. Look for: whatsapp ipa for ios 7.1.2
Note: This often installs version 2.18.81, which may still fail to activate. 2. Sideloading a Specific .IPA File Do you have a personal experience with WhatsApp